That's what the Smash.iso is. Is it supposed to be named differently, or in a different folder? Does it matter that it's scrubbed?
the name of the files doesn't matter, wit just checks for an extractable file, you could call it Tom and Jerry's Wonderland, as long as it is a valid wii iso file, it will find and extract it
you need to place it in the same folder as your batch file
I think it doesn't matter, whether or not it is scrubbed as long as it isn't missing any files compared to the normal iso